Outlook sending repetitive error messages

[Jacob Vulk]

I have a person in my organization who accidently clicked on the wrong calendar to make changes to a meeting. after clicking on the calendar, the individual began receiving error messages stating that they do not have permissions to that calendar (which the individual knows). they receive anywhere from 5-10 of these messages a day sometimes more. i have tried deleting the OST files and recreating them, that did not work. does anyone have any suggestions? 

the URL it gives within the error message takes you to a page that has no content.

[#2]

You can ignore those messages, and pretty much everything else you see under Sync Issues.

Probably some "link" remains to the other Calendar, check under the Calendar view (Other Calendars, Shared Calendars, etc) and also on the Folder view by expanding the default Calendar folder.